1 a) Copy and complete the table of values for y=1 -4cosx, correct to one...

1 a) Copy and complete the table of values for
y=1 -4cosx, correct to one decimal place.
x 0^0 〖30〗^0 〖60〗^0 〖90〗^0 〖120〗^0 〖150〗^0 〖180〗^0 〖210〗^0 〖240〗^0 〖270〗^0 〖300〗^0
y -3.0 1.0 4.5 -1.0

(b) Using a scale of 2cm to 〖30〗^0 on the x-axis and 2cm to 1.0 units on y-axis, draw the graph of y=1 -4cosx for 0^0≤x≤〖300〗^0.
(c) Use your graph:
1 -4cosx=0
(ii) From the graph find the value y when x= 〖105〗^0
(iii) Find value of x when y=1.5.?

1 Answers Available
Asked by JULIET umeh on 20th July, 2020